Well I’m highly impressed with my new Blackberry 8700 from T-Mobile. I don’t see the reason for the doubled price tag on the 8700.
EDGE (but no streaming radio / tv etc)
Brighter screen (auto senses how bright it needs to be and adjusts)
Polyphonic / mp3 ringtones
All of that isn’t worth the price. You can get a MDA for the same price with WAAAY more functionality. I just prefer the OS on the Blackberry.
Check out my Flickr set of the side by side pics between the two models.